Just picked up a used HP Laserjet 1006 for nothing. Works and prints fine except the pages have thin horizontal, the darkness of the very thin line/streak is uneven, and on the right side of the page close to the edge the streaks have a dark spot. I just tried cleaning it twice and didn't help. The streaks didn't appear on the page used for cleaning, but did appear on a blank page with a 1 at the bottom.